范例如下
#include <iostream>
#include <set>
using namespace std;
int main ()
{
set<int> c;
c.insert(1); c.insert(2); c.insert(4); c.insert(5); c.insert(6);
cout<<"count:"<<c.size()<<endl;
cout<<"find(4):"<<*c.find(4)<<endl;
cout << "lower_bound(3): " << *c.lower_bound(3) << endl;
cout << "upper_bound(3): " << *c.upper_bound(3) << endl;
cout << "equal_range(3): "
<< *c.equal_range(3).first << " "
<< *c.equal_range(3).second << endl;
cout << endl;
cout << "lower_bound(5): " << *c.lower_bound(5) << endl;
cout << "upper_bound(5): " << *c.upper_bound(5) << endl;
cout << "equal_range(5): "
<< *c.equal_range(5).first << " "
<< *c.equal_range(5).second << endl;
c.insert(c.lower_bound(3), 3);
c.erase(5);
copy(c.begin(), c.end(), ostream_iterator<int>(cout," "))
}
